Union Water Quality Report
4 cities ranked · Average grade: A · South Dakota
Avg Score
90.2
Cities Ranked
4
Health Violations
1
PFAS Detected
0
90.2
County avg score
4
Cities ranked
100%
A or B grade
0%
D or F grade
1
Health violations
0
PFAS detected
Grade Distribution
How Union cities scored
A
4
100%
Excellent
B
0
0%
Good
C
0
0%
Fair
D
0
0%
Poor
F
0
0%
Failing
Comparison
County vs South Dakota average
▲ 8.9 pts above state average
City Map
Water quality across Union
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Union
Worst cities
County context
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Union
Industrial polluters nearby
Facilities reporting the most surface-water releases in Union, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
LOAD KING TRAILERS ELK POINT, SD57025 | — | — |
ROYAL CANIN USA INC. NORTH SIOUX CITY, SD57049 | — | — |
CONSUMERS SUPPLY - NORTH SIOUX NORTH SIOUX CITY, SD57049 | — | — |
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 4 cities in Union
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Elk Point | A | 94.5 | 2K | 42 | Health Unresolved | |
| 2 | North Sioux City | A | 91 | 3K | 35 | Unresolved | |
| 3 | Dakota Dunes | A- | 89.9 | 4K | 3 | ||
| 4 | Alcester | A- | 85.5 | 820 | 12 | Unresolved |